Quantize not working at all in Piano Roll

Hi my Q doesn't seem to work at all in piano roll. For example, i select 1/16 in the Time Quantize selector and I select one note in the region and hit Q, Nothing. The note stays where it is.

I am running 10.07

Thanks

I've never been able to see any movement when using Quantize in the piano roll either. Not on any project at any setting or any version of X. I just thought it was a bug of some sort.

You must be doing something wrong. I've never seen this not work, in any version of Logic Pro X. I've taught to over 100 students how to quantize in the Piano Roll in LPX and all of them without fail have seen their notes move to the grid.

I just had the same "issue" with midi not quantizing from the Piano Roll window but it WAS quantizing from the Quantize tool.

I noticed that my midi file had a few "takes" and was NOT flattened. As soon as I flattened it .. everything was fine!!!

CORRECT! As of Logic Pro (latest version) 10.4.2 - High Sierra

Bear in mind people, if you have 2 lines of percussion on differing keys, and you group (lasso) the notes, Quantize FAILS. If you grab the lines separately however and quantize each line individually it works.. How laborious & much does that suck? Never used to be like this... ;(

I think I found a fix (if this is the actual problem you're referring to). If you record midi takes and you want to quantize in the piano roll or use any of the other sliders in the piano roll, you have to have the specific "midi take" selected in the tracks area. Select the down arrow in the tracks area and that will show all the takes...and then you have to actually select the take and highlight it. Hope this helps. Keep in mind even if the track is highlighted in the tracks area...IT NEEDS TO BE HIGHLIGHTED FROM THE DROPDOWN MENU.

will NOT allow you to quantize or use velocity sliders

WILL allow you to use quantize and velocity sliders

I think I found a fix (if this is the actual problem you're referring to). If you record midi takes and you want to quantize in the piano roll or use any of the other sliders in the piano roll, you have to have the specific "midi take" selected in the tracks area. Select the down arrow in the tracks area and that will show all the takes...and then you have to actually select the take and highlight it. Hope this helps. Keep in mind even if the track is highlighted in the tracks area...IT NEEDS TO BE HIGHLIGHTED FROM THE DROPDOWN MENU.

Wow!That works!You are genius!Thank you so much!

None of these solutions have worked. I routinely use the quantize function in the piano roll but occasionally I get a pesky track where the notes actually become LESS quantized when I apply quantization. Eg: the first note of a run will be only a few ticks before or after the beat, but the Q to 1/16th function yanks it to either the 16th before or after the beat it's closest to! Huh?

I've checked and re-checked all settings. Proper focus, no swing, Q is 100%, nothing else in the track that would cause it to do this.

Makes zero sense. I agree with the other commenter that this is most definitely a bug in 10.5.1.

I'm running into this today and I think there's some strange logic if Snap is set to Smart that some regions or events might run afoul of. There are some combinations of notes I can select within a specific region that will quantize properly, and others that will not. If I select all of them and hit Q, nothing happens. But if I select random groups of them, some quantize properly and others quantize incorrectly.

@sunbrother 10.5.1 is quite old now have you/can you update your Logic Pro? 

I’m on 10.7.9, which is why I posted, I don’t think this issue is exclusive to that old version

Also, just an FYI for whoever runs into quantisation issues:

Quantisation misbehaves in regions that do not start on a musically sensible subdivision (tick).

There's also the changed behavior with the "Swing" slider, you now need to set it to 50 for "no swing", while earlier you set i to 0 (zero).